Mt. Thielsen Wilderness encompasses 54,914 acres and runs along the crest of the Cascades 80 miles east of Roseburg and just north of Crater Lake National Park. Elevations range from 5,000' to the 9,182' summit of Mount Thielsen. Born of the same volcanic activity that created Crater Lake, this is the land of fire and ice.
Much of the Mount Thielsen Wilderness is made up of high alpine forests and open meadows. The terrain is moderate but becomes very steep toward the crest of the Cascade Mountains. Timberline stands at about 7,200 feet, just above a forest of mountain hemlock and fir mixed with whitebark pine. Lodgepole pine dominates the vegetation at lower elevations. The many streams in the area carry a substantial amount of snowmelt in spring.
The Pacific Crest National Scenic Trail winds through the Mount Thielsen Wilderness for 26 miles along the summit of the Cascade Range. For a more serene wilderness adventure, hike into Lake Lucille or Maidu Lake on the North Umpqua Trail #1414 (or via Maidu Lake Trail #1446). The trail passes over deep pumice that was deposited when Mt. Mazama erupted to form Crater Lake. The famed North Umpqua Wild and Scenic River begins at Maidu on its long trek to the Pacific Ocean.
For the more experienced, the climb to the top of 9,182 foot Mt. Thielsen is a nice challenge. The Mount Thielsen Trail enters for approximately five miles from the west to rise above the tree line and, after 200 feet of hand-over-hand scrambling, finally reaches to within 80 feet of the summit and a breathtaking view. The summit itself requires a short technical climb. Sitting at the top of the sharp volcanic pinnacle, it is easy to see why Thielsen has been called "the lightning rod of the Cascades".
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At a Glance
||Wilderness Permits may be required for both day use and overnight stays from Memorial Day Weekend until Oct. 31. Free permits are self-issued at the trailhead.
||Wilderness regulations apply
Use of the Fremont-Winema National Forest part of Mount Thielsen Wilderness by a group of more than 6 people and 9 pack and saddle stock is prohibited, except on Maidu Lake Trail #1446.
Use of Maidu Lake Trail #1446, and the Umpqua National Forest area by a group of more than 20 units, including pack and saddle stock, with a maximum of 12 people and 8 stock or 12 stock and 8 people.
Recommended maximum group size: 10 (people & animals).
Pack & Saddle animals are not permitted within 200 ft of any stream
Check at the Ranger Stations for fire restrictions
Highway 138, one mile east of the north entrance to Crater Lake National Park, is the southern entrance point.
Trailheads and trails that access Mount Thielsen Wilderness at Fremont-Winema National Forest
The Fremont-Winema National Forests offers a nice entry point to the Wilderness at Miller Lake adjacent to Digit Point Campground. From the campground you can access Miller Lake Trail and Maidu Lake Trail. Maidu Lake Trail travels into the Wilderness to cross the Pacific Crest Trail and continues on to Maidu Lake and the North Umpqua Trail #1414 within the Umpqua National Forest.
Burn Butte, Miller Lake, Mount Thielsen, Pumice Desert East, Tolo Mountain. Download free U.S. Forest Service Topo maps.
Buy maps online
Buy the Umpqua Divide Wilderness map (contains the maps of Boulder Creek Wilderness, Rogue-Umpqua Divide Wilderness, Mount Thielsen Wilderness and the Oregon Cascades Recreation Area) online at the National Forest Store.
Go to Wilderness.net for online maps and other important Wilderness information.